Given the system of equations, what is the solution? x + 2y = 7 x - 2y = -1 a. {(-8, -12)} b. {(3, 2)} c. {(-4, 6)}

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Given the system of equations, what is the solution? x + 2y = 7 x - 2y = -1 a. {(-8, -12)} b. {(3, 2)} c. {(-4, 6)}

Mathematics
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You can "add equation" like this:|dw:1433110131529:dw|
then that 2y would cancel each other.
x=6?

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Add the x's in each eqaution, so |dw:1433110855737:dw|
so how do we find the answer?
Solve the equation 2x = 6 to get the x value
x=4?
2x = 6 What number times 2 gives you 6?
3
right. you could find y, but you don't really need to since only one of the choices has a x value of 3
thank you
you're welcome

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